A star that should not exist

At the centre of this picture is a very unremarkable looking faint star, too faint to be seen through all but the largest amateur telescopes. This ancient star, in the constellation of Leo (The Lion), is called SDSS J102915+172927 and has been found to have the lowest amount of elements heavier than helium of all stars yet studied. It has a mass smaller than that of the Sun and is probably more than 13 billion years old.

Crédit:

ESO/Digitized Sky Survey 2

À propos de l'image

Identification:eso1132a
Type:Observation
Date de publication:31 août 2011 19:00
Communiqués de presse en rapport:eso1132
Taille:929 x 929 px

À propos de l'objet

Nom:SDSS J102915+172927
Type:Milky Way : Star
Constellation:Leo
Catégorie:Stars

Image Formats

Grand JPEG
132,9 Kio
JPEG taille écran
116,7 Kio

Coordinates

Position (RA):10 29 14.07
Position (Dec):17° 29' 12.80"
Field of view:15.59 x 15.59 arcminutes
Orientation:North is 1.6° right of vertical

Couleurs & filtres

DomaineTélescope
Visible
B
Digitized Sky Survey 2
Visible
Pseudogreen (B+R)
Digitized Sky Survey 2
Visible
R
Digitized Sky Survey 2